If you need help making the "th" sound, watch this video. Remember to keep your tongue out, resting on your top teeth.
Here is another video on how to say the "th" sound
To practice speech sounds at home, try to aside 15 minutes a few times a week. Spend the first 3-4 minutes going through a word practice list. Then try practicing the sounds in a more natural activity, such as reading aloud or playing a simple game. See the Articulation page for more practice activity ideas.
*** More Resources to Come***