For "Gaadoreeru no ue tobikoe"...
say "gaadoreeru" out loud. You will instantly be able to see that it means "guardrail".
飛び越え(とびこえ) is from 飛び越える, which means "to jump over" something or "to walk over" something. 飛び越え is a rough way of telling someone to jump over something. In this case, the lyric 「ガードレールの上(うえ)飛び越え」 means "Jump over the top of the guardrail."
Also, I think that at this point, you shouldn't really try to translate song lyrics. Lyrics are often vague and poetic-sounding, so it's best to leave those alone until you know a lot of vocabulary and grammar.