Following behind what KJ has mentioned.
I hand tipped my cues for some time. After I found this site, I knew that I would eventually have a lathe and all the goodies.
If you don't already, the first things you should have in your inventory is Chris's book and dvds. Also Joe Barringer's dvd set.
When I first found this site, I scoured the archives and copied as much as I could into text files that I knew would be handy to reference at a later date.
I still do.
When I do a system back up on my PC, the first folder that I back up is my Cue Info folder. If I lost that one, I would kick myself in the butt for the rest of my life. Its backed up on several different types of media.
First Deluxe. I worked on my own cues, cheap EBay cues and house cues long before I hung my Shingle out and let people know that I would do repairs.
As KJ said, once you touch someone else's cue, you are now liable.
Also, it is your reputation hanging in the wind.
My first job was a cracked butt cap. Pretty easy but I also had to make a thin maple ring for it too. Glad it wasn't any fancy ring work or I would have been up a creek.
People saw my first job, as simple as it was and gave me many compliments. I was on my way, like it or not. Yep, it was a nervous part of my life now that I was committed. I still had lots to learn and still do. My wife figured at times that I should have been committed for all the money I spent, and still spend.
So, to make a short story long, as I am famous for, don't be in a huge hurry to hang that repair sign on your back door. Lots of time for that.
Ya know, as easy as the makers make it look to replace a tenon, a ferrule, butt caps, plugs etc, on the Repair, Building and UTube vids, it takes several before you become comfortable with your ability to do them.
Remember, it is your Rep on the line out there. A couple of bad deals and you aren't going to get any further business. Bad news travels fast.
Take your time and practice.
OK, I started off with Elk Masters for the soft tip guys and snooker players. Also making my own Milk Duds.
Le Pros and Triangles for the cheaper non layered tips.
Mooris and Everest. For the die hard fans that like them.
Wizards
Emeralds
Talisman
California 5 layer tips, approx $1 each for people that would like a layered tip. I can install these considerably cheaper.
Super Pro tips that people seem to like, myself included for break tips
Mad Man break and jump tips.
I press a few Le Pros and Triangles as well. They work great.
Phenolic and now G 10 for the die hards.
Now, the above mentioned tips sit lonely in their boxes for the most part as I mostly install, Ultra Skins and Black King tips.
I have received great feed back from people that are using them so no need to tie up a large amount of money other than a couple of popular
brands.