I'm still jumping into World of Tanks when I get little chances and feel I'm getting better in the random battles to the point where I'm confident of getting a kill almost every match in my Tank Destroyer and Artillery tanks, but still struggling with the concept of the light tank scout.
Marder II tank destroyer. With upgraded gun and some binoculars for longer viewing range, I can act like a nice sniper. I typically find a spot forward from our base but not as front line as our battle tanks and support the engagement from afar. I might lost some punching power, but even at half a kilometer I can punch through tier III and IV tanks easily and threaten tier Vs. I like to pick a spot in a bush near some hard cover for ducking behind and with a view of two likely approach routes.
I'm getting to the point where I can get one kill at least with a couple damages on others every match, and getting 2 kills is more common every day. Sometimes I get on fire (I mean figuratively as you can literally get on fire in your tank) and get 3 or 4 kills and once I picked up 5 kills.
Sturmpanzer II. Its not a well liked version of SPG due to limitations but I enjoy the ability to have a bird's eye view and drop little packets of doom on targets heads. Unfortunately, artillery tends to get matched up against a wider tier range and I have to be careful not to target the big tier 7 tanks as I can barely hurt them.
PzKpfw 38(t). I have not got a good handle on scouting as I tend to end up dead a lot with few kills, damages, or even spotting. I'm too weak for the first two and often too cautious for the last, but I'm starting to get the hang of it. Just this morning I put eyes on a flank, spotted a rusher trying to flank to our artillery position and chased him until my damage and a friendly TD killed him. Then I did an end round run into their artillery and killed two before I was finally put down.
As you can see, I'm all tier III right now but I do have the tier IV tank destroyer unlocked, the popular Hetzer, but I'm short credits to afford it yet. Another gaming session will get me enough to buy one assuming I sell my sweet Marder II in the process.