Using TMs, they can be found in dungeons or as a reward with wonder mail.
An example of wonder mail that will reward you a TM (Protect) is:
??-Y SM+? ?F?M
1??8 +47T 8??W
Yes, the moves you already know stay with you even when you evolve.
Bulbasaur can learn any move he can learn in Pokemon leafgreen/ firered.
You probably have all of his moves turned off or he's prone blocked.
When you have no more moves left just have a move selected and then press L + A to use Struggle.
You have to use a Ginseng, it will randomely boost whichever move is currently selected by the leader. Not for partners. If you want a partner to have a move that is boosted you will have to make that partner the leader first. ALSO you can only use the item in a dungeon!
electic type moves
set the move uwant (the one u wan plus 1) and let eat ingest a ginseng
oioipo
because you swithed all of his moves off!(they count as stars) it may also be you ran out of pp for his moves dumbo!
When you set a move and press L+A you use the move.
It depends on what moves you teach it and the dungeons that you face.
It depends who you are and what moves you know