Congratulations MO !!! Handsome dog you got there !!!!
You asked for advice , so here are a few things .
Ask your vet about a puppy kindergarten that may be close. Looks like he is about ready. Most are great and help you understand your dog better.
House breaking ; straight forward outside after meals , naps , indoor play times. Reward good behavior. Catch him in the act and whisk outside , he'll catch on. After the fact , no sense disciplining , just clean it up .
A crate , most dogs enjoy their own little place , never a punishment , just a safe quiet place of their own. Directly outside after a nap do do his business. Meal time in the crate and again outside after eating. Favorite quiet toy and blanket help make it "His Home " , he won't want to mess in it if it is small enough.
Chewing and Toys , buy a bunch , get a variety , some he will like , some not so much. Simple replacement of what is his when you catch him chewing on something that is not on the approved list . Some catch on quicker than others , but he will . Just remember though , that old pair of slippers smell and taste like Mrs MO's new shoes or your good pair of hunting boots
Enjoy , grab an extra cup of patience , keep it fun for him .
Be a good actor , outside doing his business IS the greatest thing in the world , Mouthing / or teeth on you or your skin makes you cry in terrible pain and play time stops ( just for a min or two ) he will catch on.
Again , just some opinions given freely over the innertube . We have many more experienced dog folks here than I . Posted rather than PMed so any misconceptions on my part can be corrected by others.
Oh , one more thing , keep taking pics , they grow up fast