Hi ya,
Dont know if i'm too late,but i suggest getting a cheapish set of kenko tubes of ebay and even an older manual lens 50mm pentacon or something like that,(can also use these to reverse on another lens ),have a good play and learn the basics of macro,
this is how i got into it as a cheap option.I never use auto focus with macro anyway,off camera flash is a big help too.I'm pretty sure you can get macro tubes to take EFS lenses now too(mine are only EF).
just a suggestion for a cheaper way of going about it,i warn you it is very addictive though. I can post up some examples of shots from my cheap set up if you like.
I have just bought a nifty fifty EF50mm 1.8 ii ,and it is great on the kenko macro tubes.
cheers
Adam.....