I don't know a huge amount about that Sicilian line but the main thing for white after an early e5 from black is that the d5 square is weak. 5.Nb5 is the best move, threatening Nd6+ getting a bishop for the knight, black should play 5...d6 to stop that threat and the general idea is to bring the other knight to c3 and then d5 and the first knight via something like a3, c2 and e3 to cover the d5 square.

Thanks Schumi (and i posted this in the Beginner's video section - not trying to spam, just new to the site)

Schumi is right I think. I saw 4... e5 all the time and couldn't figure out what to do for the longest time because you NEVER see it at those instructive games at higher levels. I wonder if it's partly because they are trying to imitate players like Fischer who was a fearless e5'er (but he played it only AFTER playing the najdorf, which include the key moves d6 and a6, which would prevent this maneuver). I only tossed that out there because I used to do it myself, lol.

5. Nb5 is the correct continuation forcing d6. After he plays a7 to kick your knight, you can retreat it to c3 with an eye toward Nd5 at some point. A permanent knight on d5 would be a long goal worth pursuing, which you can achieve by trading your dark bishop for Black's f6 defensive knight. I.e. if your opponent plays Nf6, play Bg5, Bxf6 and then play Nd5 and back it up with the other knight on c3.

It's a pretty important idea and one of those exceptions that contradicts the general principle of keeping your bishops. It does make sense however since a protected knight on d5 would be so strong that white should be happy to give up a piece that can't fight for d5 (the dark bishop) in order to get rid of one of Black's primary defenders of d5. If you can achieve this position, you'll have a very comfortable if not practically winning position at lower levels.

Oops, don't think I was being clear, I meant Black would likely play a7 AFTER d6 to kick the knight. If he plays a7 right after 5. Nb5, white should of course play Nd6+.

Here's an extreme example of viciously punishing the early e5 push, alas it only works on patzers. White's Qd2 was probably the only "thinking" move, the rest was played according to the above ideas.

1. e4, c5 2. Nf3, Nc6 3. d4, cxd4 4. Nxd4 e5 5. Nb5 Nf6 6. N1c3, Bb4 7. Nd6+ Bxd6 8. Qxd6 a6 9. Bg5 Qe7 10. Qd2 O-O 11. Nd5 Qc5 12. Bxf6 gxf6 13. Nxf6+ Kg7 14.Qg5+ Kh8 15. Qh6 Black resigns 1-0

Funny enough, Black played 8... a7, perhaps realizing belatedly that this was a move he should have played. A dubious move, but don't know if it was a blunder.
10... O-O, however, was a blunder as White wins a piece with Nd5 and Bxf6. Note that 9... Qe7 was forced. Anything else and White can play Nd5, followed by Nc7+ winning the Black queen.

Cool game... I think Nb5 is your best bet.. then he can go d6 or a6. a6 is the move I like, 1...a6 2. Nd6 Bd6 3. Qd6 Qf6 with interesting battle for playing d5.

Also, at one point in the video, 5.35 his bishop was up for grabs free! You instead chose to move the queen to h3

Cool game... I think Nb5 is your best bet.. then he can go d6 or a6. a6 is the move I like, 1...a6 2. Nd6 Bd6 3. Qd6 Qf6 with interesting battle for playing d5. try starting out on Sicilian for major themes in the opening.

Some comments.
Also, at one point in the video, ~5.25 his bishop was up for grabs free! You instead chose to move the queen to h3

Also you could take his queen since Rxd1 is not mate, then Bf1, Ra1 h3 and you are winning... But Qh6 was stronger and Your end is truly spectacular!!!
Kf8 does not work as well since there is a mate of f7. Kf8 2. Qg7+ Ke8 3. Qxf7+ Kd8 4. Rg8#

Too funny.

I'm laughing hard about missing my bishop covering f1 the whole time ... I knew that was a good spot for that piece to be!