Pre-tipping hair

Hey!

I am new to all of this and want to do extensions in my own hair using the shrinkies method. 

I have read that it is sometimes cheaper, however a little more involved, if you pretip the hair yourself.

Since I have never done this before, I am clueless, lol.

If I get a weft of hair, lush for example what do I do?  I understand that you cut it off into strand sections but how big?  And then what do I do?  Do I need one of those melting pots?  What products?

Someone HELP!

Thanks in advance for any help anyone can offer me!