Riven is one of the very best top lanes in my opinion. She has fairly good sustainability, especially once you get wriggles, she can harass with some nice burst damage, has good mobility, and can farm pretty well. All of these characteristics make her my personal favorite character to top with

These runes are designed to beef up your damage output, since with the items you will be grabbing, you will have tons of life already, so survivability isn't a huge concern.

As with many top champions, flash and ignite are the masteries of choice for riven. flash for that extra escape in case it is needed (although she should be able to escape just fine most of the time). Ignite works very well with her for finishing off champions, combined with her ult, there is almost no chance of surviving a wind slash, ignite combo, so long as they are used when the champion is low health.

The masteries, much like the runes, are made so that you can put out damage, since as stated before, survivability shouldn't be an issue.

The early game items (Wriggles, Boots, Blood Thirster) are made to give you damage and life steal for survivability. Early game you should be putting out good damage, and since most champions shouldnt be too keen at taking you out at this point, you dont need to focus too much on health.

Mid to late game, you'll start grabbing some health in Warmogs, which you can take advantage of by grabbing Atma's. After this, to help your chase and survivability even more, you grab a frozen mallet.

Now, if your game is a REALLY long game, and you have tons of extra gold, you can always replace your wriggles with a trinity force. You already have lifesteal from the Blood Thirster and the health, speed, and the abilities of Trinity Force far outweigh those of Wriggles.

Your first three levels, you will be getting one of each skill, going Q, W, E. this should get you set up with all the mobility that you could need at that level and enough damage output. After this, you will focus on grabiing Ki Burst (your W skill) and maxing it first, grabbing your ult (R) whenever it comes up. Whenever Ki Burst is not available, or when it has been maxed, you will grab your E skill (Valor) and maxing it next. You will max your Q last.

The reason for grabbing Ki Burst first is that it provides fairly good damage which combines with the stun to allow you to deal even more damage. on top of this, it is fairly low CD so it can be used multiple times.

You max valor next because, not only is it great for initiating or escaping, the shield it provides, especially at higher ranks of it, can be extremely useful in fights, blocking their initial onslaught while you deal your damage to them.

You max your Q last because it is, in my opinion, the least useful of the skills. It deals good damage, but doesn't have the value that Valor or Ki Burst have.

Dont forget to grab your R, Blade of the Exile/Wind Slash whenever possible.

My game play for riven solo top lane is fairly simple. You are solo top, you have a jungler, use it to your advantage. I try to play the lane fairly passively, at least early game. I try to keep the minions pushed towards my turret, often attacking them at my turret. You can still last hit just fine near the turret, and it keeps your opponent pushed. This makes for some very easy ganks for your jungler, giving you a huge advantage in lane. If you and your jungler are on the same page, top lane should be a land of plenty for you. Easy kills/forced backings will give you a large advantage as well as be a pain in the rear to your opponent.

Once you get wriggles you can start playing more aggressively, using your skills to poke and harass. The way i like to do this is, q into them (using all three q's preferably) then activate ki burst to stun. Get one or two attacks in, the use valor (E) to leave, taking little damage while doing a nice little bit to them. after a few cycles of this, they will have noticeably lower health, and since wriggles gives you life steal, you should be just fine.

Late game, its all about knowing when to jump into team fights, using your ult (Blade of the Exile/Wind Slash) at the right times, and getting as many stuns and Q's in as possible. Try to jump in with E, Q multiple times, W, and repeat the process, while focusing the squishies and hopefully using the stuns to keep the tanks from harassing your carries.