As someone else said, you can't have too many clamps. That said, you can have too many of the wrong kinds of clamps. The best thing when starting out is to get clamps as you need them for projects not simply to have them.
Most of the posts have been focusing of "F" type clamps, pipe clamps and pros and cons of different makers.
If you really want to develop your skills, think about fabricating your own clamps.
Consider starting out with some Cam operated "F" type clamps. You make them out of scraps and after you've done a few dozen you will be a better woodworker, you have a few dozen clamps and you have cash for other things. Make frames and use wedges. Be creative! Your inner creativity is a big part of what attracted you to woodworking in the first place.
Also get creative with ratchet straps, and even cut up inner tubes. There are endless things that need clamping that "F" type clamps are pretty much useless for.
Don't rely on the BORG or other retailers to have what you need. Look for plans and build exactly what you need.
For picture framing I use one I built on a doubled sheet of 3/4" plywood that is edged on two adjacent sides with hard maple, and the opposite sides with hard maple with t-nuts for threaded rods every two inches and different length hard maple clamping boards that fit on the ends of the threaded rods. T makes it very easy to square up the frame until the mitred corners dry.
What does it mean when you've accumulated enough tools that human life expectancy precludes you from ever getting truly good with all of them?