Howdy Shorty,
Braces (which use buttons) and suspenders (which use clips) have been around a long time. I dont' think anyone will really care what you do one way or the other, but dressing is a lot of the fun.
A couple of options for you. One fella I know used pennies for buttons on his jeans. Looks and works great. Another easy option is the bachelor buttons found at Wal-Mart or just about any fabric store.. they just punch through the cloth and instant buttons.
Don't be in a rush to get dressed up.. take some time, look over your choices and decide what your vision and personality want to show.
Adios,