The monsters just move in a straight line from one side of the screen to the other
You've set an acceleration of 600 on all the ghost's Bullet movement. That's a really high value so they'll get faster and faster! Set it to 0 for all of them and they keep going at a steady speed.
nd I cant shoot either.
Works OK here. Your event for shooting looks fine too.
lso forgot to ask, would using tutorials for Construct Classic work if I'm using Construct 2 because there doesnt seem to be all that many for the newer version yet.
Classic has a different UI and some subtle differences to C2 (like not being zero based and other little gotchas), plus C2 is much newer so doesn't have as many features yet. You can try Classic tutorials for C2, but you might need to ask for help if you get stuck, or you might just run in to something that hasn't been added to C2 yet. We're working on more C2 specific tutorials, it's just it's a lot of work and C2 is fairly new!
lso Is there a limit to how large files can be when importing them into construct?
Nope, no limits on filesize.