Yeah, that confirmation thing is a pretty big deal within the system. It is different than other coins and while you may be able to mine before the 4 confirmations, it can mess things up. Also, check your wallet online and see that the same confirmations and TX's appear both online and in your local wallet. Many times, you have not yet sent the TX's to the actuall chain and your local wallet shows something different than your actual account.
Do your reward assignment.
Wait for the 4 confirmations, you can watch this in either the local or online wallet.
If you have been watching the local wallet go to Burst Online Walllet and make sure that the 4 confirmations show there too. If not, make sure that your local wallet has completely synced. If confused and not seeing a downloading message check the far left box on the wallet dashboard and look at the top most entry finding the block number, say its 276000. Then, compare that to the same place online, if the online list has a top entry with a higher number, then you have not fully synced. So, online says 276010, you are still 10 blocks behind, it says 276000, you are perfect.
All is good? Then start ,mining.