Assalamu ‘Alaykum,
Some resources below in preparation of Ramadan – taken from ImamTahir.com.

1. What do we do in Ramadan? Shaykh Nuh.
http://www.halaltube.com/podpress_trac/web/345/0/nuh-ha-meem-keller-ramadan-halaltubecom.mp3

2. Ramadan – Shaykh Abdul Hakim Murad
http://www.halaltube.com/abdul-hakim-murad-ramadan

3. Taraweeh – 8 or 20? Shaykh Riyad ul Haq
http://hamzajennings.com//wp-content/downloads/mp3/Taraweeh%208%20or%2020.mp3

4. Moonsighting – Shaykh Hamza Yusuf
http://www.halaltube.com/moon-sighting

5. Ramadan Advice – Shaykh Hamza Yusuf
http://www.halaltube.com/ramadan-advice

6. Ramadan and Charity – Imam Zaid Shakir
http://www.halaltube.com/ramadan-and-charity

7. Lectures (19 total lectuers) by Imam Zaid Shakir entitled The Blessings of Ramadan
http://www.zaytuna.org/multimedia.asp?speaker=3

8. The Virtues of Standing in Prayer in the Month of Ramadan – Shaykh Faraz Rabbani
http://media.libsyn.com/media/seekersguidance/Understanding_Virtue_-_020-21_-_Virtues_of_Standing_in_Prayer_in_Ramadan.MP3

9. Ramadan Fiqh (older recordings) – Imam Tahir. Part 1 – Part 2