These links should serve as a reference for safe and proper techniques on how to perform many common (and some uncommon) procedures in the<unk> . For some procedures there may be both a longer video explaining in-depth details if this is your first time (eg med students and interns) and a shorter video if it's been a while and you just want to brush up.
Lumbar Puncture:
NEJM (10:59)  https://www.nejm.org/doi/full/10.1056/NEJMvcm054952
Mellick (3:14) https://www.youtube.com/watch?v=grpeEDBMrn8
Paracentesis:
NEJM (9:50) https://www.nejm.org/doi/full/10.1056/NEJMvcm062234
IO line Placement
EMRAP (3:12) https://www.youtube.com/watch?v=KHXSfh2ZRDM
US-guided IV Placement
5 Min Sono (5:52) https://www.youtube.com/watch?v=4Znd21vJPb8
Central Venous Catheterization
NEJM (15:28) https://www.nejm.org/doi/full/10.1056/NEJMvcm055053
Facial Nerve Blocks
Inferior Alveolar Nerve Block: FreeDentalEducation (4:48; procedure at 2:15) https://www.youtube.com/watch?v=kmPqV-dMo98
Infraorbital Nerve Block: Brian Lin (2:00) https://www.youtube.com/watch?v=3nzXe_NYKlg
Mental Nerve Block: The Dental Box (1:06) https://www.youtube.com/watch?v=hPALXAq9pTo
Nasal Foreign Body Removal
BVM for Complete Occlusion: Robert Dudas (0:51) https://www.youtube.com/watch?v=PacvHiJFhNA
Katz Extractor for Partial Occlusion: Larry Mellick (3:22) https://www.youtube.com/watch?v=rQpIOdJrYIc
Balloon Tamponade
Minnesota: EMRAP (5:08) https://www.youtube.com/watch?v=4FHIiA_doWU
Blakemore: EMRAP (4:47) https://www.youtube.com/watch?v=NHelCd5Jtp4
Digital Block
CORE EM (2:34) https://www.youtube.com/watch?v=i51y6t1YRNQ
Paronychia
Brian Lin (3:35) https://www.youtube.com/watch?v=G9CBKoKEvRM
Subungual Hematoma Drainage
EMRAP (1:02) https://www.youtube.com/watch?v=G_7eKSYLfxY
Rongeurs
EMRAP (2:30) https://www.youtube.com/watch?v=zBmsrGzPk40
OVMC:ED
RRMC:ED
SCVMC:ED
SCVMC:EXC
SCVMC:Main
MHH-TMC
Tdap
Harbor Macros: AMA