The conversion can be in different ways, I am stating here 2 ways:

• CH3OH (methanol) + red P/I2 or, HI ---->CH3I (methyl iodide) + KCN ----->CH3CN(methyl cyanide) +Na/C2H5OH ------>CH3CH2NH2 +HNO2 ------->CH3CH2OH (ethanol)
• CH3OH+HCl----->CH3Cl 2CH3Cl+2Na------->CH3-CH3+2NaCl(DryEther)CH3-CH3+HCl----->CH3-CH2-Cl+H2CH3-CH2-Cl+KOH(aq)----->CH3-CH2-OH

I hope this answer helps. All the very best for your future endeavors!