Hi sm_ch!
Welcome you to Clixsense. There are numerous ways to earn in Clixsense like clicking Ads, Clixgrid, surveys, tasks, referrals etc. I have been here in Clixsense since May 2011. Till now I have earned over 800$ here doing part-time as I am a college student. My main source of income has been the tasks. Since you are a beginner, you won't be able to access the level 1,2 & 3 tasks. So, that means you need to complete zero level tasks which are very few in number and appears in the tasks section from time to time. So, you need to have patience first as earning money is not so easy. Try to complete zero level tasks if it appears with good accuracy. As you complete more tasks with good accuracy, your level will slowly increase and thus enabling you to access level 1,2 and 3 tasks. Apart from tasks, I do have a part of my income earned through Surveys and ads as well. I want to make sure that you won't be able to complete the surveys always as there are specific demands of any geographical location. Keep trying them, you will be able to complete them definitely. Follow these rules, it will help you:
1). Be regular.
2). Have patience.
3). Work harder
4). Check the Clixsense forum as it helps a lot to clear your doubts.
5). Don't cheat.
You will definitely succeed. All the very best!