Just put them here if you're on windows and if you're on mac not sure:
C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\maps

superweenie_b4
http://www.mediafire.com/download/odactdmgor4srbg/superweenie_b4.bsp

trade_museum_final
http://tf2.gamebanana.com/maps/download/188198

manor_of_fun
http://tf2.gamebanana.com/maps/download/186933

trade_psykopat2_fix
http://tf2.gamebanana.com/maps/download/185498

trade_what_fix
http://tf2.gamebanana.com/maps/download/185497

sv_theforest_alpha
http://tf2.gamebanana.com/maps/download/181504

trade_resort_v12b
http://tf2.gamebanana.com/maps/download/187868

trade_clocktown_b2a
http://www.mediafire.com/download/x1447lb2dsd9vgi/trade_clocktown_b2a.bsp
http://www.mediafire.com/download/wizq9mtiivog6ng/trade_clocktown_b2a.nav

trade_hyrule_oot3d_alpha_13a
http://www.mediafire.com/download/t1c522l829gfjof/trade_hyrule_oot3d_alpha_13a.bsp

koth_wubwubwub_remix_vip
http://www.mediafire.com/download/s47914ca6h64b5o/koth_wubwubwub_remix_vip.bsp
http://www.mediafire.com/download/181aqxbw0odclzy/koth_wubwubwub_remix_vip.nav.ztmp

koth_traingrid_b2
http://www.mediafire.com/download/l78lcly39a9h93j/koth_traingrid_b2.bsp

trade_oasis_id1-lv22
http://www.mediafire.com/download/omdo5wzm2k830jx/trade_oasis_id1-lv22.bsp

trade_vatican_city_v1a
http://www.mediafire.com/download/an3yp5idbwpaua7/trade_vatican_city_v1a.bsp

trade_frostbyte
http://www.mediafire.com/download/e1mm496ml3lk426/trade_frostbyte.bsp

trade_stormgate_hangout_v1
http://www.mediafire.com/download/smnp55cbwq9q2wd/trade_stormgate_hangout_v1.bsp

Dota_fortress_1_1
http://www.mediafire.com/download/lfb154ooytux3ot/Dota_fortress_1_1.bsp

ctf_thefort
http://tf2.gamebanana.com/maps/download/38422

trade_spookyville_v6
http://tf2.gamebanana.com/maps/download/187070

trade_coni
http://tf2.gamebanana.com/maps/download/187408

trade_houseofchaos
http://tf2.gamebanana.com/maps/download/183607

trade_abstract
http://tf2.gamebanana.com/maps/download/156912

trade_abstract2
http://tf2.gamebanana.com/maps/download/163541

trade_frantic_factory_v4a
http://tf2.gamebanana.com/maps/download/184650

trade_kfbd_rv_finalv12
http://tf2.gamebanana.com/maps/download/184208

rusty_bucket_bay
http://www.mediafire.com/download/24dje4e943j14d7/rusty_bucket_bay.bsp
http://www.mediafire.com/download/vudnofzskjjpi34/rusty_bucket_bay.nav

trade_castlesiege_b2
http://www.mediafire.com/download/qzj8acq4qb4et3x/trade_castlesiege_b2.bsp

trade_skyte_a3
http://www.mediafire.com/download/3uu34apyb2wumjf/trade_skyte_a3.bsp