Buying simply because it's an insider trade is lazy. From time to time, I'll use insider trading as a filter to narrow down the search. Stocks that drift to the lower end of their trading range, or something that drops owing to negative news, but does not effect the fundamentals is attractive. That happened with FB, not too long ago. As an example I put a small amount into RDN shortly after seeing insider trading (recently), because it looked like a case of over selling.
I"m not big on the US market long term, so the intent is more short term (quarter to quarter).
The following link can be helpful, you can see who's investing, and if it's a sizable investment... I generally ignore token investment amounts.
To the question at the top, sit down and write out your thoughts:
1. What if I don't invest? Your answer
2. What are all of my investment options, include doing nothing and how do I feel about each (rate them)?
3. What if I invest and lose / gain? are you comfortable potentially losing money, if so how much?
4. What do you want from life and how does money fit into it?
5. Write out scenarios together and give them scores, then add them up and see what you come up with
6. Put some time into it and then start a new tread and give feedback, maybe it will be helpful to someone else.
Fear Not, or have "fear" of living a wasted life, any of us could die tomorrow.