fly2cast pretty much nails the money saving idea. I've been reloading since 1967 and haven't damaged a gun yet. Any reloading manual you read will tell you to examine what you just did to the case after every step of the process. Do this. Of course that makes progressive presses kind of unnecessary, but they are too expensive for starters anyway. Let's continue on the budget by buying Lee case trimmers. A big advantage to these slow trimming tools is they can't loose their length adjustment. I even like Lee dies for the collet feature of most of their rifle dies, and that "finishing" die in the pistol kits. The powder scale can be balance beam or electronic. I have an old RCBS beam and an electronic scale I bought from Ballistic Products. Both are reliable. As for the press, the most important thing is the ram doesn't go "over-center" as the handle is lowered. If it goes to the top of its travel, then back down slightly as the handle is lowered, setting up the dies is made more complicated. I don't recommend buying a press on-line, instead check any press you are buying for this before leaving the store. You don't need the most expensive press in the store, unless you want to help the salesman make his car payments by adding to any commission he may get. i like the aforementioned Hornady manual because I use Hornady bullets in many of my rifles. I also like the Lyman manual and use the on-line resources from the powder companies. In addition to fully agreeing to confirm load data from more than one manual, I'll add pay attention to the primer used (they are not all the same strength) and the overall length measurement of the loaded cartridge stated in the manual. Reloading computer programs give predictive information,not all are actually tested for pressure before publication.
There are lots more details you'll pick up as you gain experience.
One final caution: The 243 has a reputation for quickly going from safe to hazardous peak chamber pressures. There are other popular cartridges that share this, notably the 7mm Rem Mag. This is often due to wear and roughening of the chamber throat with use. This means a safe load in a new rifle may not be safe a few years later.