>>13016521Why don't you just join a lab in a university or company? There's no chance of getting approval working in your backyard.
If you already have experience with plant culture, you can focus on that. For example Cinnamaldehyde is responsible for the flavour of cinnamon and it's biochemical pathway uses common molecules found in many plants. Plants are also easier because once you get past the plate culture phase, you can plant the plant in soil and grow them normally.
>>13016531That depends a lot on the type of organism. Human cells are the most expensive to buy and cultivate while plants are much easier. Generally speaking you need,
1) Plates, flasks, test tubes, pipettes etc. for storing and transferring material.
2) Autoclaves for sterilising the above and laminar flow chambers for performing the cell culture.
3) Incubators to hold the cultures at a particular temperature and in some cases to continuously stir them.
4) Media tailored for your organism.
5) Fluorophores or dyes to help you identify the the cells that correctly took up the genes.
>>13016537Those kits contain specific genes that have already been tested and approved before. You can not perform novel genetic engineering without regulatory approval.