Q: Finding the perfect snow isn't necessary for this method.  Use any snow that even slightly packs together.  Keep in mind that you will be aiming for quantity over quality.  Pick up one handful of snow and toss it to your other hand. Move as quickly as you can. Use this method for speedy snowballs, not for accurate or powerful snowballs. Use both hands to quickly squeeze the snow into a rough snowball.  Press the snow together firmly between your hands just one time.  Spending too much time shaping or packing these snowballs isn't necessary.  Try packing the snow one handed by simply squeezing the snow in that hand. Don't worry about the shape of the snowball. Utilize this method to quickly make many snowballs.  Store them in a stockpile for easy use in a fight.  Making more of these snowballs is easy, so don't worry too much over how many you may or may not have.  Make as many as you can in between battles. Stack them loosely, don’t worry about organization. Throw them as you make them if you are in a pinch Using these quickly made snowballs will prove difficult in terms of accuracy and power.  Having a great number of them makes up for this shortcoming.  Take aim and quickly throw your stockpile at your target.  Make it your goal to have as many snowballs as you can quickly flying towards your target.  Try throwing a few at a time with one hand. Use both hands to pick up and throw your snowballs. Throwing a large number makes up for poor accuracy.
A: Grab some snow. Pack the snow. Keep making snowballs. Throw the snowballs!

Q: Remove the -ir ending from the infinitive and replace it with the appropriate ending to talk about present actions. The -ir endings are -o, -es, -e, -imos, ís, and -en. For example:   Yo abro: I open.  Tú abres: You [informal] open.  Él/ella/usted abre: He/she opens; you [formal] open.  Nosotros abrimos: We open.  Vosotros abrís: You all [informal] open.  Ellos/ellas/ustedes abren: They/you all [formal] open. When you're discussing an action that doesn't extend at all into the present, the preterite tense is appropriate. Depending on your subject pronoun, you will replace the -ir with -í, -iste, -ió, -imos, -isteis, or -ieron.   Yo abrí: I opened.  Tú abriste: You [informal] opened.  Él/ella/usted abrió: He/she/you [formal] opened.  Nosotros abrimos: We opened.  Vosotros abristeis: You all [informal] opened.  Ellos/ellas/ustedes abrieron: They/you all [formal] opened. When you're talking about something that happens habitually, or that was interrupted, conjugate your verb in the imperfect tense. For an -ir verb, this means replacing the -ir with -ía, ías, ía, -íamos, íais, or -ían.   Yo abría: I was opening.  Tú abrías: You [informal] were opening.  Él/ella/usted abría: He/she was opening; you [formal] were opening.  Nosotros abríamos: We were opening.  Vosotros abríais: You all [informal] were opening.  Ellos/ellas/ustedes abrían: They/you all [formal] were opening. In Spanish, the conditional tense is used to describe actions that might happen, or that are dependent on some other condition to happen. Regular -ir verbs are conjugated using the same endings as the imperfect tense, added to the end of the infinitive rather than the verb stem.   Yo abriría: I would open [if].  Tú abrirías: You [informal] would open [if].  Él/ella/usted abriría: He/she/you [formal] would open [if].  Nosotros abriríamos: We would open [if].  Vosotros abriríais: You all [informal] would open [if]. Ellos/ellas/ustedes abrirían: They/you all [formal] would open [if]. Add an ending to the full infinitive to conjugate regular -ir verbs in future tense, just as you did with the conditional tense. Use the endings -é, -ás, -á, -emos, -éis, and -án.   Yo abriré: I will open.  Tú abrirás: You [informal] will open.  Él/ella/usted abrirá: He/she/you [formal] will open.  Nosotros abriremos: We will open.  Vosotros abriréis: You all [informal] will open.  Ellos/ellas/ustedes abrirán: They/you all [formal] will open.
A:
Use the present tense to describe actions currently happening. Switch to the preterite tense if the action happened in the past. Move to the imperfect tense if a past action continues to happen. Add the imperfect ending to the infinitive to express the conditional tense. Pick the future tense for talking about actions that will happen.