#Youtube bounty

#week 2

telegram username: @IhorSukhanov
youtube username: Ihor
link to videos:
1. https://www.youtube.com/watch?v=3TxjfpjVdpQ
2. https://www.youtube.com/watch?v=xxzJBMtBxjY
3. https://www.youtube.com/watch?v=tn4SRO5HJqE
4. https://www.youtube.com/watch?v=l-pimBCNMcw