Google

For example:

Transgenesis techniques: biolistics, microinjection, electroporation, lipofection

Please invest some of your own time to review the areas of interest to you on the web or perhaps through some online journals or magazines.

What kind of answer do u expect? The question is too broad to be answered on this platform.

Great, Thank you Hayat Essalmani

Thanks Abhijeet Singh

Thank you William Letter

(Nafiu Aminu) : There are many new devices and methods that many may not know

It's a very broad and basic question!