in my wallet i have 0.000149 btc what can i do with this amount, trading ? landing ? or what ? it's not even cover a transaction fee
Don't fret mate with what you have in your account now! Just participate in some activities that can earn you some more bitcoin. You already know the answer to the question you asked and there is absolutely nothing you can do with that amount. If you have a good job though, you can just buy no matter how little but like someone already told you, joining a signature campaign can be a start to you earning something better than what you already have. Whatever you have now, just leave it as you don't know what that may amount to one day. I dreamed 1 satoshi being equivalent to $1 ... so imagine what that would have been for you.