Log Cabin is a good, easy beginner block. Here's a tip: make your last row around wider than the rest by a half inch or more. Then you can trim up your blocks to size with no worries.
Just Google "Disappearing Nine Patch" for the pattern. This one is super easy, too, and if you lay it out right, you don't even have to match any seams. This is a very easy pattern that makes up super quick and looks great, too. An excellent choice for beginners.
Disappearing four patch is another one.
Stephanie