I need some help

Any USB enclosure for 2.5" S-ATA HDDs will do fine, they cost as low as 10 €.
You could also get any S-ATA Dock like these.

HFS+ (Hierarchical File System, a.k.a. Mac OS Extended (Journaled) Don't use case-sensitive)

• Read/Write HFS+ from native Mac OS X
• Required for Time Machine or Carbon Copy Cloner or SuperDuper! backups of Mac OS X system files.
  [*]To Read/Write HFS+ from Windows, Install MacDrive
  [*]To Read HFS+ (but not Write) from Windows, Install HFSExplorer
• Maximum file size: 8EiB
• Maximum volume size: 8EiB
• Mac OS X: Mac OS Extended format (HFS Plus) volume and file limits
• You can use this format if you only use the drive with Mac OS X, or use it for backups of your Mac OS X internal drive, or if you only share it with one Windows PC (with MacDrive installed on the PC)

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You need a SATA to USB adapter with power. If you buy an external enclosure that should work pretty well.

 

USB is good. An enclosure with FireWire 400/800 connections would allow for faster data transfer.