First with any new account - USE A $100 COUPON (if you have one

) Depending on your keywords cpc this could be a great for testing to see what works/or the best chance of working and what doesnt work.
PPC is a mix of keywords, bids, targeted and compelling ad copy. You can have all this but if your landing page/website suck then your campaigns will fail regardless of how awesome your campaigns are set up. Yes Google makes it easy to spend a lot of money on ppc, but you can spend smart!
Use the keyword planner tool to identify keywords relative to your product or service. Then make an extensive list of negative keywords (words you don't want your ads to show up for). Negative keywords are there so you don't wastefully spend on clicks that aren't targeted.
Don't put all your keywords in one ad group. Break them out by themes so your ad copy will be as relevant as possible. For long tail keywords you can use broad match modified and more competitive keywords use exact match. You can also build out a huge exact match kw list and have each kw be its own ad group. (great for ad copy testing)
Create another campaign with broad match modified keywords with your extensive list of negative keywords. When you get enough data run a search query report and put any converting keywords from this campaign into your exact match campaign and continue doing this. Always test ad copy to see what converts best for you.
If your site is not mobile optimized don't spend money on it by putting the bid multiplier to (-100%)
***Also by default with new campaign creation google will select all networks (this includes google.com and search partners as well as the display network) If you notice a huge number of impressions and no results chances are you could be opted into the display network. Go into campaign settings and turn it off if you don't want to be on it. If you do want to run on the display network then make a separate campaign and target only display.***