Hi, welcome to the TE forum.
I wouldn't suggest you to buy tokens. I think that most of players would agree with me, this game isn't worth to spend real money.
First, avoid buying scouts, they are too expensive. You need over 50T for decent one, so they aren't cost-effective.
Instead I'd suggest you to study auctions and bidders, find some good time for bidding, that's usually (early) morning. Sometimes there are low activity periods on auction where only few players are bidding so no big competititon. Activity of players on auctions varies from level to level and from day to day. Usually highest activity is at the 1s days of season
Avoid token wars! Better try negotiations or wait for later than bid on high active market.
If auction leads to token war, better leave it early before you spend too much. For me, maybe it is better to find and buy some outstanding 5* player on negotiation list and bid for him than to join token war on auction. Don't forget that on negotiations you will get back your tokens if seller doesn't accept bid within 24 hours.
Also there are already written useful threads and guides on this forum about everything, so you should google search and filter results to TE forum only. Good luck!