Before you are ready to start learning music, you must get a sense for the basic information that virtually everyone who reads music needs to know. The horizontal lines on a piece of music make up the staff. This is the most basic of all musical symbols and the foundation for everything that is to follow. The staff is an arrangement of five parallel lines, and the spaces between them. Both lines and spaces are numbered for reference purposes, and are always counted from lowest (bottom of the staff) to highest (top of the staff). One of the first things you'll encounter when reading music is the clef. This sign, which looks like a big, fancy cursive symbol at the left end of the staff, is the legend that tells you approximately what range your instrument will play in. All instruments and voices in the higher ranges use the treble clef, and for this intro to reading music, we'll focus primarily on this clef for our examples.  The treble clef, or G clef, is derived from an ornamental Latin letter G. One good way to remember this is that the line at the center of the clef's "swirl" wraps around the line that represents the note G. When notes are added to the staff in the treble clef, they will have the following values: The five lines, from the bottom up, represent the following notes: E G B D F. The four spaces, from the bottom up, represent these notes: F A C E. This may seem like a lot to remember, but you can use mnemonics—or word cues—that may help you remember them. For the lines, "Every Good Boy Does Fine" is one popular mnemonic, and the spaces spell out the word "FACE." Practicing with an online note recognition tool is another great way to reinforce these associations. The bass clef, also known as the F clef, is used for instruments in the lower registers, including the left hand of the piano, bass guitar, trombone, and so on.  The name "F clef" derives from its origins as the Gothic letter F. The two dots on the clef lie above and below the "F" line on the staff. The staff of the bass clef represents different notes than that of the treble clef. The five lines, bottom to top, represent these notes: G B D F A ("Good Boys Don't Fool Around"). The four spaces, bottom to top, represent these notes: A C E G ("All Cows Eat Grass"). Individual note symbols are a combination of up to three basic elements: the note head, the stem, and flags.   The note head. This is an oval shape that is either open (white) or closed (black). At its most basic, it tells the performer what note to play on their instrument.  The stem. This is the thin vertical line that is attached to the note head. When the stem is pointing up, it joins on the right side of the note head. When the stem is pointing down, it joins the note head on the left. The direction of the stem has no effect on the note, but it makes notation easier to read and less cluttered. The general rule on stem direction is that at or above the center line (B for treble clef or D for bass clef) of the staff, the stem points down, and when the note is below the middle of the staff, the stem points up.   The flag. This is the curved stroke that is attached to the end of the stem. No matter if the stem is joined to the right or left of the note head, the flag is always drawn to the right of the stem, and never to the left! Taken together, the note, stem, and flag or flags show the musician the time value for any given note, as measured in beats or fractions of beats. When you listen to music, and you're tapping your foot in time to the music, you're recognizing that beat.
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One-sentence summary -- Get a handle on the staff. Start with the treble clef. Understand the bass clef. Learn the parts of a note.

Article: Sometimes, you might even see an amount, such as 5¢ or 15¢. This determines how much money you will get back. This is against the law in most cities. It's known as recycling theft and could earn you a citation. In most cases, the price you end up paying is much greater than the 5¢ or 15¢ the bottle might get you. It's not worth it. If your state haves a buy back program, you can take your plastic bottles to a special center and get between 5¢ and 15¢ back per bottle. How much you get back will depend on the state that you live in, and the size of the bottle. At the time of writing this article, the following states have buy back programs:   California Connecticut (no HDPE plastic) Hawaii (PET and HDPE plastic only) Iowa Massachusetts Maine Michigan New York Oregon Vermont Depending on which territory you live in, you can get anywhere between 5¢ and 35¢ per bottle. At the time of writing this article, the following territories offer cash refunds for plastic bottles:  Alberta British Columbia Manitoba (beer bottles only) New Brunswick Newfoundland Nova Scotia Ontario Prince Edward Island Quebec Saskatchewan Yukon Territory Northwest Territories Most recycling centers will not take back dirty bottles. Some also request that you remove the cap as well. Check with your local recycling center to see what their requirements are. To find out whether or not your city has one, visit your city's website. If you live in the United States, keep in mind that just because a certain state offers cash refunds for plastic bottles does not mean that the state's recycling center will take back every plastic bottle. Most states will only accept plastic bottles that actually say "CASH REFUND" or "CRV" and will not accept blank, out-of-state bottles. If you live in another country, this could be a great option for you. Most such centers do not have a walk-in service; you will need to ship your plastic bottles to them. The center will then either pay you based on the weight of the bottles, or how many bottles you send in. Here are some other things that could affect the amount you get back:  The type of plastic The of the plastic The physical properties of the plastic (such as density, melting point, etc) The quality of the plastic There are many different types of plastic that a bottle might be made out of. The most common types are #1 and #2. They are also the most widely accepted. Also, keep in mind that a bottle's shape and size will also determine whether or not it can be recycled. Some centers only accept bottles of a certain size, while others have size limits.
Question: What is a summary of what this article is about?
Look for "CASH REFUND" or "CRV" on the top or bottom of your bottle. Don't try to earn extra cash by taking plastic bottles out of other people's recycling containers. Know what states in the US offer Cash Refunds and CRVs. Know what territories in Canada offer cash refunds for plastic bottles. Make sure that the bottles are clean and the caps are taken off. Take the bottles to your local recycling or "buy back" center. Consider checking with your city to see if there are any centers that purchase plastic bottles. Know that not every recycling center accepts every type of plastic bottle.