I can’t get past level 148. Any tips?

In level 148 you need to clear a lot of books some of which are stuck near the top and you will have to have boosters (rockets etc) to hit them. Clear many of the lower books and then try to make as many boosters as you can to let you clear the rest. Use the teleporters to move boosters to other locations if it will help. The more boosters you make the more likely you are to complete the level. Some luck may be needed. Keep trying and you will get there.

Check the video below to see the level completed.