I would urge you to think every step of the process through and plan all the details in such a way that you can refrence them if you get stuck, mess something up etc.
A maple/purpleheart blank can be had for under $50, so the cost of f*****g up isn`t that high.
It`s a very good place to start and if you take it easy and don`t rush anything you can actually make a playable cue on your first attempt.
Make sure you have all the tools and supplies you need from the getgo.
Choose tried and tested materials, like Juma for joint and buttcap, a pin that is easy to install, like Radial. Read up and watch tutorials about finishing as it`s one of the most difficult aspects of cue building.
Buy some shafts in different stages, so you can get a playable cue reasonably fast, but experiment with making your own dowels, cones etc.
If you want to go for a morte advanced build, go for a full length core design.
you can make some very nice, stable cues witch can show of your cue philosophy, or you can build some cues with different cores and materials to hone in on how you like a cue to play.
A full length .750" core is where I`m at now. I have cores in maple, purpleheart, yellowheart and jatoba. The next step is to core the wood I turned round this summer and start gluing sometime in january. I`m looking forward to see if my ideas about balance, hit etc. match up with expectations.