Don’t use invisible text. What the black hatter does is use the exact same color for both the text and the background for any words they want to hide. While this can make for a better experience for visitors, the search websites see it as cheating and will penalize you for it if you get caught.

Avoid entrance pages. Again, you’ll see a brief increase in your rankings, but might be dropped from the listings totally when the search websites check. Almost any site you use to help increase your rankings will have a TOS. It is down to you to read and follow them to the very best of your capability. Once you begin looking for loopholes or justifications, you are moving into black hat SEO territory. Hence if that occurs, take that as a sign to do the proper thing.

Doing the above things will go a long way towards avoiding black hat SEO strategies. You also will not have to stress about dropping in the rankings if you’re caught getting it wrong.