That you ordered parts before having a schematic is a significant statement, and not a good one. At the risk of sounding like Colin, I think you picked a project that is too difficult for a beginner such as yourself. Because the chips are binary counters rather than decade counters, it will take a lot of external gating to decode the carry and reset conditions needed for a clock to count properly. Also, setting the clock will be additional layers of logic gates. If you "really have no clue what is going on", how do you expect to read a schematic?
Separate from that, a 555 oscillator is not accurate enough to be the timebase for a digital clock, even if you have an accurate frequency counter to use to calibrate it.
Your question is very poor; it has no details about what kind of clock, how many digits, why you are doing this, etc. There are hundreds of digital clock schematics, projects, and kits on the innergoogle. I suggest you review a few dozen to get a feel for what it is you want to do.
ak