That's about right but not enough. Water is actually neutral to wind so if colliding jutsu of each element are the same rank they will both cancel out. Also remember that water can be combined with other elements to produce unique effects: Water and earth create mud, fire heats water it create boiling water or steam, lightning electrifies water, and wind could increase the power behind water jutsu. If you have any questions about a jutsu don't hesitate to ask.
To start performing water jutsu you will need to get a strong mental image of the essence of water (basically a description of water's characteristics) and concentrate on converting your chakra to the water nature. Then send the built up suiton chakra into the water to try and manipulate it and create a small wave. After that, try to form small wall of water and then make a stream of water shoot out of the lake. That is the basic water technique that could also be done without a water source by releasing water from your mouth, hands, etc.
(Suiton No Jutsu) - Water technique
Rank: D
Type: Supplementary/Attack/Defence
Range: Short-Mid
Damage Points:20
Description: Creates small waves of water,small blasts, and small shields of water.
Note: Doesn't require a water source but can be used to manipulate existing water.