Where to buy sandbag for working out?
Ultimate Sandbag by far is the leader on sandbag market. It has handles that makes it comfortable for different presses, cleans, rows, deadlifts, even snatches. You can check out my article about sandbags here. You can order one through this page or here. You can make your own sandbag if you read my article here.
Pyotr Krylov russian strongman
Check out my article on his life and lifting career here.
Best way to get ripped with kettlebells
Kettlebells will definitely help you in your pursuit of getting ripped. Pick exercises that involve whole body into action. In the other words most metabolically demanding exercises. Squats, Clean & Presses, Clean & Squats, Swings, Snatches. You can try pairing different exercises. For example, perform Swing, then Clean, then Clean & Press, then Snatch. It's one rep. Also you can try interval training. Try 15:15 or 30:30 work/rest ratio. You can alternate your kettlebell exercises with jump rope. There is no best way. All ways are acceptable and effective. If you want to get ripped then focus on your diet at first place. Drink plenty of water. Eat less carbs. Eat less overall. Implement short rest intervals in your training. Getting ripped is more a matter of discipline than using kettlebells.
Full body routine to gain muscle
Some time ago I read an article on T-Nation called "Unilateral Movements Make You Weak". Very loud title, in my opinion. Especially for the content inside. The author examined the transfer between unilateral and bilateral exercises from position of maximal strength and using barbells/dumbbells. That article has its own flaws which I don't want to emphasize right now. But the main take-home point is that unilateral movements DON'T make you weak. They make you stronger. Want to know how? Then read on.