I think everyone has their own preferences in trading and whether a signal provider would be beneficial for them or not depends on their trading style and knowledge. I think that trading indicators are also useful since crypto currencies are highly volatile.
Trading indications are yes really needed, besides this, one must be updated on news and updates of the coin he/she has invested, so that one will know when the coin will spike up or fall down in the market.
Agreed. Having good, reliable information before hand or even as soon as it hits the market is important in helping to strategise on ones' investment decisions and thus market position. This is because the market can move within seconds.
Besides knowing how to trade there is nothing else more important than having access to information. Intel these days is everything.