#2: to state an intention. For example, "after I eat, I'm going to sleep." 「食べたら、すぐ寝る。」 "When he answers, we'll decide." ｢彼が答えたら、決める。」 Notice that the actions are ordered; the verbX with -tara attached must happen before verbY.
#3: to suggest. For example, "how about you eat at Matsuya's today?/ Why don't you eat at Matsuya's today?" ｢今日、松屋で食べたらどう（ですか）。」
Necessary vocabulary for all Japanese students:
逃げる・にげる run away, escape
I just noticed that I made a mistake with my unicorn kanji! Did you notice, or would it have been better if I'd said nothing?