Susan(Nasus backwards) is great, not only does he provide heavy damage for the team with his Q if used correctly, but also can be one of the tankyest champions in the game. This champion does require some practice, but once even the slightest skill is obtained to stack correctly, he is a very fun pick!

For runes you can really go anywhere. If you want to add some AD to the mix it is possible and will help when last-hitting. If you want to go AP susan go for it, but remember, his E is the only ability that scales off AP(I don't recommend AP unless it's ARAM). Another path that is hard to master but amazing when played correctly is life steal susan. Overall I recommend an average bruiser rune page because of the mix of tank and health, but really he can be played many different ways.

THIS IS THE MOST IMPORTANT PART OF SUSAN! Farming and last-hitting with your Q is the only reason why susan is played. When you last hit a minion, champion, or neutral monster you Q gains a few damage points. After last hitting repeatedly your damage starts to STACK. An easy goal is 100 stacks by 10 minutes, that is a good beginners mark to get your stack on. My record for stacks is 1400 and trust me it's fun. Don't be afraid to stick in the top lane for a little while longer then you usually would, trust me you will benefit your team more in the long run if you stack at every opportunity you have.

Although it can be done, I do not recommend jungle susan. The main reason is you simply don't get as many stacks. Nuff said... (this is just preference)

Many new players are afraid of susan, whether it be that they feed with him, or if they simply don't know how to play him. Honestly I play susan a lot, and really he takes little to no skill. All you really need to know how to do is build, and stack, and I've already got you covered on one of those. Susan is a champion that is easy to learn and hard to master, as long as you have a basic understanding of the champion, YOU WILL WRECK FACE. On the other hand is what most people are afraid of. Feeding and not doing well. This can be very common even among susan masters. Everyone knows the true power of susan, so you will often see many good top laners constantly being aggressive and bullying you so hard for taking one creep. One thing I try to remember is not to feed, and I can win late game. That 10 minute 100 stacks thing is also a helpful marker, because at 100 stacks, from my experience, susan can 1v1 any top laner his level. So make sure to keep that in mind.

Because susan can be so OP, lots of experienced people playing ranked feel the need to ban him. Susan is a common ban, and if neither you or a team member play on playing him and are ABSOLUTELY SURE you will get him first ban him straight away. As I said before people know he is OP, only when he has stacks, so they bully the heck out of you for taking one creep, this is probably the only downside, either stacking, or being poked every five seconds. Really you will learn ways to get around this to complex to explain here, and really if you don't know quite how to play susan, don't expect to face roll in ranked. I suggest playing susan in blind pick with friends so they can help you be safe in lane and learn to stack. DON'T BE THAT GUY WHO PLAYS A CHAMPION FOR THE FIRST TIME IN RANKED. please don't be that guy.