Hi Timmy, so far I've been practicing on stationary items, stuff round the house etc. but when the spring/summer comes round I want to start shooting insects, spiders that sort of thing.
Excellent! You have a number of choices then but live insects, especially flies and their ilk can be difficult to get close to, and I personally prefer not to use a tripod in these situations.
My advice would be to get a flash of some description, then figure out how to diffuse it. I started by making my own diffuser out of an ice-cream tub, some tin foil and some kitchen roll (see the first few images
in here). You may need to think about how to get the flash off camera, as you want the light source to be as close to your subject as possible (creating a large area of light to improve diffusion), so if you can't figure out how to make a diffuser do that (there is a DIY model based on a Pringles tube that gets the light to the end of your lens) you may need to look into flash brackets and a way to remotely trigger your flash.
This is the basic hand held approach, which will allow you to stop down your aperture to get more DoF and keep your shutter speed high. The flash will act as your shutter as without it your images will be dark, and the flash has a much shorter duration than your mechanical shutter, and should hopefully result in nice sharp images, "freezing the action." Something to investigate is light "fall-off" and how it can affect your exposure, particularly backgrounds.
Practice at home if you like, but the sooner your can get outside the sooner you can start perfecting your "field craft": How to approach bugs without scaring them off (hint: approach slowly and mind where your shadow falls) and composition (shoot from low down).
You'll find it both challenging and frustrating, but hopefully a lot of fun. If you really get into it, it will open up a whole new world you never knew existed and most of the enjoyment comes from trying to figure out exactly what it is you've taken a picture of!
Enjoy!
Edit: My experience of ring-flashes are that they are either very expensive, or very cheap and not really up to the job. I'm not a bit fan of the tell-tale highlights they leave and imagine them to be difficult to diffuse effectively. There are a few members here that use them to great effect, but I would personally opt for a standard flash and work with that initially.