I am newbie, just want to know is it possible to mine any alternative coins with 8GB RAM Laptop.
It is possible to mine any coin with any hardware that can solve the according algorithms. The question you should ask is: Is it profitable to mine with a CPU?
The answer to that is NO.
CPU, GPU even ASIC none of them is better at making money with Bitcoin than taking the needed investment directly to buying Bitcoin (or an Altcoin) and selling it with a profit when the value has increased.
To make it clear: Valid reasons to mine is supporting the network of the coin and to learn about the process as a hobby from a technical point of view. Trying to use mining to gain from it is at least a waste of time and for most people probably a huge waste of money.
My suggestion to you: Just learn about how to setup mining and try it as it is a nice start. Then do the maths yourself and calculate how much coins your hardware can mine and what the electricity it consumes doing it costs. You will find the mining isactually costing you money instead of making you money. Instead of mining just save up the cost of electricity you would expend on mining and periodically use that saved money to buy bitcoin directly, put them aside, forget about them and be happy about the increased value of your coins a few years later.
If you want to get Bitcoin faster than that, work for them. Plenty of opportunity around.
