This plan below was put together by Dan Wallace, and I really like it. I appreciate the simplicity and focus of it, as it takes you through the books of the GNT in increasing order of difficulty. For most of us, reading a group a day, as is suggested, will be more than draining, though a chapter a day certainly is feasible.
by Dan Wallace
This list is organized along two lines: 1) easiest to most difficult, and 2) approximately 10 chapter segments which bear some semblance of unity (e.g., either literary [pastorals] or historical [James-Galatians]). If you do 1 group/day, you’ll read the whole NT in a month.
John 1-11
John 12-21
1 John; 2 John; 3 John; Philemon
Mark 1-8
Mark 9-16
Matthew 1-10
Matthew 11-20
Matthew 21-28
Revelation 1-11
Revelation 12-22
1 Thessalonians; 2 Thessalonians
Ephesians; Colossians
Philippians; Romans 1-8
Romans 9-16
1 Corinthians 1-10
1 Corinthians 11-16
Galatians; James
1 Peter; 1 Timothy
2 Timothy; Titus
Jude; 2 Peter
2 Corinthians 1-7
2 Corinthians 8-13
Luke 1-8
Luke 9-16
Luke 17-24
Acts 1-10
Acts 11-19
Acts 20-28
Hebrews 1-7
Hebrews 8-13