AVR-Chat

I apologise upfront if this has been asked before - again and again etc.

I am a little confused about programming the target uC, as I have only
been working in simulators and the likes and in general just playing
around.

The side that confuses me the most, is the wiring of the pin to the uC
- is it as straight forward as MOSI to MOSI, MISO to MISO, SKT to SKT,
and RST to RST, or is there more to it?

During my Google searches I have found a number of programming board
circuits that are quite confusing as some use straight out wire,
resistors, transistors, diodes or a combination from the interface to
the chip.

The only thing that I do not find confusing, the board needs to have
between 3.3v to 5v.