Here are some resources you may or may not find helpful:

Missions Organizations and Blogs: 

Reaching and Teaching is a new missions organizations that focuses on providing theological education to pastors worldwide. Primarily based in Latin America, they have expanded to other regions in the world. Their main curriculum comes from Hearts, Heads, and Hands by David Sills.

Training Leaders International provides theological education to pastors and leaders. They do not have a set curriculum and generally teach to a more educated audience than Reaching and Teaching. Their blog is an excellent source of missions topics.

The International Mission Board is the foreign missions board of the Southern Baptist Convention headed up by David Platt. They primarily work with Unreached People Groups and focus on church planting.

Joshua Project is a people group information gold mine. They have statistics and information on people groups all over the world. If there is ever a problem or a discrepancy with their statistics they are quick to reply and update.

Church Focused Organizations: 

The Upstream Collective is a group of missions leaders who focus on helping churches send missionaries. Their blog is helpful on various topics pertaining to all aspects of sending missionaries.

The Gospel Coalition has many different blogs and resources linked on their page. They are reformed in their theology and evangelical in their missiology.

The Front Porch is a site dedicated to bringing awareness and a theological framework to the Black Lives Matter movement. This site is primarily headed up by Thabiti Anyabwile.

Darrell Bernard Harrison blogs at Just Thinking. He is reformed in his theology and offers thoughtful compelling commentary on current issues, especially as it pertains to African Americans.

Daily/Frequent Readers: 

Justin Long is a missions researching with Act Beyond. He publishes longer articles on his website, has a weekly roundup, and will retweet missions articles on Twitter.

Tim Challies runs a great blog. He links to helpful articles on a daily basis and writes blog every day. He has a give away every Friday.