You haven't provided a whole lot of information, so I'll make this as generic as possible.
Hey all I'm basically starting out from scratch here. My goal is to be able to do 23 Chin ups and 23 Pull ups.
Should you do other exercises than Chins and Pull-ups?
If 23 Chins and 23 Pull-Ups are your main goal, maximum specificity is the way to go.
So unless you're far from achieving a proper rep, only do chins and pull-ups. You can still do presses and stuff, but don't do "assistance lifts" for your pull-ups and chins.
Can't do 1 proper pull-up / chin up?
Start with dead hangs, work your way through negatives, slower negatives, negative frenchy pull-ups/chins, next step, add 5-15kg to your negatives if you're on your own or find a partner to do assisted reps (assisted reps seem to be the consensus here on Strongfirst, though I have no experience with it personally).
This progression could take anywhere between 1 and 4 months. If you're starting out from scratch, patience and consistency are your key to success. And you will succeed!
Can you do up to 3 proper reps?
Greasing the groove would be the optimal program in my opinion.
If that is not an option, do as many sets as you can do with perfect form minus 1-2 with 3-5 minute rest. Three times a week or every other day.
Can you do more than 3 proper reps?
Greasing the groove is still a very good choice (spoiler: it basically works for pretty much everything, at any level).
My other go-to programs:
- Pavel's fighter Pull-up program
- Ethan Reeve's density training
- Ladders
Can you do more than 10?
The methods mentioned for 3+ reps are still applicable, but you have some additional options now:
- Add weight until you're back in the 3-5 rep range and repeat the programs.
-
Arnold's 100 Pull-up workout, as described by Matt Kroc in this article
In general, take a week off (or decrease volume/intensity) every 3 to 6 weeks, and resume training at a somewhat lower volume/intensity than before. This is called cycling / Training Cycles, in a nutshell
If you still get stuck, or a program stops working, switch programs and return to your old program.
- Density training and the Arnold program I mentioned will generally add more to your working capacity (how many reps you can do for time and volume per day) and also build more muscle mass and fatigue than the other programs I've mentioned.
- The other programs will generally add more to your Repmax (maximum consecutive reps) and maximal strength (at least in the lower rep ranges, using heavier weights), while building less muscle mass and generating less fatigue per workout, which is why they can and should be done at high frequencies.
I have found in my training, that these two "types" of training work best if you alternate them every couple of months.